Kerr, George L. <br/><br/>
Practical coal mining :  A manual for managers under-managers, colliery engineers, and others / 
George L. Kerr. 
 - 5th rev. ed. 
 - London :  Charles Griffin,   1914. 
 - xi, 778 p. :  ill. ;  20 cm. 
<br/><br/> Includes Indexes 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining
<br/><br/><label>Dewey Class. No.: </label>622.33  / KEP 1914